What is a trench watch?

A trench watch is an early form of wristwatch adapted from pocket watch designs for officers during the First World War. They bridged the gap between pocket carriage and wrist wear for combat utility. These pieces feature wire lugs soldered to the case to accept leather straps and frequently display luminous numerals for nighttime legibility in the trenches.

How do I identify a military issue watch?

Military issue watches typically bear government property marks, such as the British broad arrow, department codes, or specific serial numbers engraved on the case back. These stamps denote official procurement for army, navy, or air force personnel. Matching movement numbers and correct military dial nomenclature further confirm authentic service provenance.

What are deck watches used for?

Deck watches served as highly accurate portable time standards for marine navigation aboard warships and merchant vessels. Navigators relied on them to calculate ship position at sea. Encased securely, they worked in tandem with marine chronometers to maintain exact Greenwich Mean Time during long voyages.

Are these watches waterproof?

Most historical military watches from the early twentieth century possess only basic dust and moisture resistance rather than modern waterproof capabilities. Gaskets and seals degrade over decades of service. Owners should avoid exposing vintage silver and steel pieces to water unless a contemporary watchmaker has explicitly pressure-tested and certified the seals.